Improved roller for bending sheet metal



' paring the outside roller for double-seaming UNirnn @rares PATENTErice..

DANIEL NEVTON, OF SOUTHINGTON, CONNECTICUT.

IMPROVED ROLLER FOR BEN-DING SHEET METAL.

To @ZZ wiz/.ont t muy concern:

Be it known that I, DANIEL NEWTON, of Southington, in the county ofHartford and I State of Connecticut, have invented a new a nd usefulImprovement in a Roller for Setting` Down and Double-Seaming Tin andCopper Varc; and I do hereby declare that the following is a full andexact description thereof, reference I being had to the accompanying'drawing, and to the letters of reference marked thereon.

The nature of my invention consists in prewith an angular groove turnedinto it, in which the seam runs in the iirst revolution, 'thus settingit down or pressing the seam together and bending it over both at thcsame instant.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

I make a roller, A, four to tive inches in diameter and aboutthree-fourths oi' an inch thick, with a hub, B, in the center, whichcon- 'rains a set-screw, C,`for the convenience of fastening in anyrequired position. On the outside of the roller is a flange orprojection which is designed to press against the botl tom of the vesselin the second revolution while the sea-m is being finished. Aboutonefourth of an inch from the dange in the surface ofthe roller is'turned a groove in an anl gle of about forty-five degrees from the axisof the same. This groove is made of suitable width and depth for theadmission of the seam, and will vary according to the Work it isdesigned to do; but common tinware will require thegroove aboutone-eighth of an inch deep and about one-sixteenth wide. The corners areslightly taken off in order to fully admit the same.

This roller being applied to any doubleseaming machine containing twoparallel shafts for doing the work, the roller pressed with screw orotherwise onto the seam which enters the groove, and by turning thecrank the seam in the rst revolution is pressed together and bent abouthalf-way over. The roller is then slightly raised, and the shaft towhich the roller is attached moved about one- .fourth ofan inch to theright hand, thus bringing the liange firmly against the bottom of thevessel. Then by renewing the pressure and turning the crank the work iscompleted.

That I claim as my invention, and desire to secure by Letters Patent, is

The application to double seaming machines of a roller containing anangular groove in which the seam runs in the tlrst revolution,substantially as herein described.

DANIEL NEWTON.

Vitnesses:

J. S. BARNEs, C. M. BARNES.

